In short: Louisville/Jefferson County metro government has about 640,800 people and sits in Jefferson County. Louisville Gas & Electric Co, Salt River Electric Coop Corp and Shelby Energy Coop, Inc serves different parts of Jefferson County, so your utility depends on your address; their 2024 home averages range from 10.88¢ to 13.21¢ per kWh (EIA). FEMA rates Jefferson County tornadoes “very high”. Rooftop solar here makes roughly 1,180 kWh a year per kW of panels by our estimate, which is about average for the U.S..
This page covers what is local to Louisville/Jefferson County metro government: its utility, outage records, sunshine, weather risks and charging. Statewide rules such as net metering, incentives and electrician licensing are in our Kentucky energy guide and the wider area is covered in the Louisville guide.
Louisville/Jefferson County metro government at a glance
- Place: Louisville/Jefferson County metro government, Jefferson County, Kentucky; about 640,796 residents (Census Bureau estimate, July 2024).
- Utility: Louisville Gas & Electric Co (investor-owned). Homes paid an average 12.28¢ per kWh in 2024 (EIA-861); the average customer lost 83 minutes of power on normal days and 434 counting major storms, with 0.8 interruptions a year (utility-wide, not just Louisville/Jefferson County metro government).
- Utility: Salt River Electric Coop Corp (member-owned cooperative). Homes paid an average 10.88¢ per kWh in 2024 (EIA-861); the average customer lost 132 minutes of power on normal days and 358 counting major storms, with 1.6 interruptions a year (utility-wide, not just Louisville/Jefferson County metro government).
- Utility: Shelby Energy Coop, Inc (member-owned cooperative). Homes paid an average 13.21¢ per kWh in 2024 (EIA-861); the average customer lost 177 minutes of power on normal days and 528 counting major storms, with 1.2 interruptions a year (utility-wide, not just Louisville/Jefferson County metro government).
- Sun: 4.05 kWh per square meter per day on average, from 1.67 in December to 6.30 in June (NASA POWER). Our rough estimate: about 1,180 kWh a year per kW of panels.
- Climate: about 1,350 cooling degree-days and 4,620 heating degree-days a year (base 65°F, NASA POWER), so heating and cooling both matter.
- Top hazards in Jefferson County: tornadoes “very high”, river and heavy-rain flooding “relatively high” and heat waves “relatively high” (FEMA National Risk Index; overall county risk rated “relatively high”).
Your utility and what it means
Louisville Gas & Electric Co is an investor-owned utility and served about 384,902 home customers in 2024; its 12.28¢ average was below the 13.81¢ statewide average for July 2026. Salt River Electric Coop Corp is a member-owned cooperative utility and served about 53,479 home customers in 2024; its 10.88¢ average was below the 13.81¢ statewide average for July 2026. Shelby Energy Coop, Inc is a member-owned cooperative utility and served about 17,437 home customers in 2024; its 13.21¢ average was below the 13.81¢ statewide average for July 2026. Those are utility-wide averages, not a quote for your address; your own bill is the real number.
For reliability, Shelby Energy Coop, Inc reported 177 minutes per customer without major storms in 2024, more than the statewide figure of 153 (EIA-861). Utility-wide numbers hide a lot: a home at the end of a long rural line usually has more outages than the average.
Net metering, export rates and incentives are set at state level and by each utility. Start with the Kentucky guide and then ask your utility for its current interconnection steps before you sign anything.
Backup power in Louisville/Jefferson County metro government
- Tornadoes (very high): Tornado-season storms cut power quickly. A battery that switches on by itself, or a portable generator ready to go, covers the first night; sirens and weather radios need power too.
- River and heavy-rain flooding (relatively high): Heavy rain can flood basements and take out power. Put sump pumps on backup power and keep equipment above the flood line.
- Short outages: a portable power station covers phones, Wi-Fi, a CPAP and lights; a home battery switches over automatically.
Size your setup with the generator sizing tool and the battery backup calculator, and compare options in backup power. Generator safety (CPSC): outdoors only, at least 20 feet from the house, exhaust away from doors and windows, never in a garage, and battery-powered carbon monoxide alarms inside. A licensed electrician should install any transfer switch, with a permit; see generator installation.
Solar in Louisville/Jefferson County metro government
By our rough estimate each kW of panels makes about 1,180 kWh a year in Louisville/Jefferson County metro government (NASA sunshine data times 365 days times 0.80 for system losses). Valued at Louisville Gas & Electric Co’s 2024 average of 12.28¢, that is about $145 a year per kW if all of it offsets your own use (an estimate, not a promise). Production swings with the seasons: June is the sunniest month at 6.30 and December the dimmest at 1.67, a 3.8-to-1 gap, so a battery or a bigger system helps in winter.
Check your own roof with the solar potential tool, see solar costs and net metering vs net billing, and read the steps in solar installation. Hail and storm exposure are worth raising with installers and your insurer.
Batteries and EV charging
A home battery earns its place when outages are frequent, when your utility pays little for exported solar, or when evening prices are high; compare in home batteries and battery costs. The federal station list shows few or no public chargers listed under Louisville/Jefferson County metro government, so a home charger matters more here: see the EV charging cost calculator and EV charger installation.
Drive on another fuel? See every alternative fuel station in Louisville/Jefferson County metro government: hydrogen, propane, natural gas, E85 ethanol, biodiesel and renewable diesel.
Permits and inspections
Solar, generator transfer switches and EV chargers normally need an electrical permit from the Louisville/Jefferson County metro government building or permitting department, or from Jefferson County if you live outside city limits, and often a utility interconnection approval. We have not verified a local permit page for Louisville/Jefferson County metro government, so check the city and county websites or ask your electrician, who will know the process. Hire only a licensed electrician or installer; the Kentucky guide lists the state licensing rules.
Nearby guides
More local guides: Louisville energy guide, Jeffersontown, Elizabethtown and Frankfort, or the whole Kentucky energy guide.
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Louisville/Jefferson County metro government energy FAQ
Who is my electric company in Louisville/Jefferson County metro government?
Louisville Gas & Electric Co, Salt River Electric Coop Corp and Shelby Energy Coop, Inc all serve parts of Jefferson County. Which one serves you depends on your street, so check the top of your bill. Their 2024 home price averages differ (Louisville Gas & Electric Co 12.28¢, Salt River Electric Coop Corp 10.88¢, Shelby Energy Coop, Inc 13.21¢) so it matters for solar math.
How much power will solar make in Louisville/Jefferson County metro government?
About 1,180 kWh a year per kW of panels by our estimate, so a 6 kW system would make roughly 7,080 kWh. Shade, roof direction and tilt change this; run your address through the solar potential tool for a better number.
Is a generator or a battery better for tornadoes in Jefferson County?
It depends how long the outage lasts. A battery is quiet, automatic and good for short outages and for pairing with solar; a standby generator keeps going as long as it has fuel, which suits multi-day events. Many homes use a battery for everyday outages and add a generator for the rare long one.
Do I need a permit for solar or a generator in Louisville/Jefferson County metro government?
Almost always an electrical permit for a transfer switch, solar or an EV charger, issued by the city or county where you live. Your licensed electrician or installer normally pulls it. Never connect a generator to your house wiring without a transfer switch.
Sources: EIA Form 861 (2024) for utility prices and outages; NASA POWER climatology (2001 to 2025) for sun and degree-days; FEMA National Risk Index for county hazards; AFDC station locator for public charging; Census Bureau for population. Estimates are ours and are not promises; see our editorial policy. Prices and programs change, so check each program page.